<br><div><span class="gmail_quote">On 1/9/06, <b class="gmail_sendername"><a href="http://kevinfreels.com">kevinfreels.com</a></b> <<a href="mailto:kevin@kevinfreels.com">kevin@kevinfreels.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<div><font face="Arial" size="2">Care to elaborate on WHY neither of these has been
brought the the attention of the lay person?</font></div></blockquote><div><br>Well, the article I just briefly glanced at suggested that one has to dump a lot more water than is in the Greenland ice cap into the N. Atlantic to halt the Gulf Stream (and I don't have time to go investigate this in detail right now). In the case of the methane clathrate, I think there is significant uncertainty as to how much of it there is, how much warming may need to occur, and the extent to which it might cause run away global warming. I think the problems have been discussed but nobody wants to push on these given the very large uncertainties that would be associated with making a strong case for them.
<br><br>It has taken a couple of decades for people to get somewhat serious about the asteroid risk. You may be running into general human apathy something along the lines of "If it hasn't happened to my grandfather or my father it isn't likely to happen to me." Most people are *not* very good at evaluating the relative risks associated with their aggregate hazard function. For example, in my remaining lifetime, which should I fear more (a) the probability of Boston being destroyed by an asteroid; (b) radiation risk from a terrorist nuclear or dirty bomb boing off in Boston Harbor; or (c) the radon gas probably leaking out of the granite countertops in the house I am now living in?
<br></div><br>I could obviously come up with a couple of dozen examples to add to this list without thinking very hard. When I do things along that line, the general response from people is usually something to the effect of, "Please stop you are making my head hurt."
<br><br>Robert<br><br></div>Side note: If the Gulf Stream does shut down, Boston is likely to become colder as well, so I'd side with the Europeans in being concerned about that.<br>